Sticky Sap on Indoor Palm: Spider Mite Infestation and Treatment

Identifying the Problem

Sticky sap (honeydew) with tiny black bumps indicates spider mites or scale. The honeydew is insect excrement.

Treatment

1. Spray entire plant with 70% isopropyl alcohol; let sit 24 hours.
2. Take outside and hose off dead insects and residue.
3. Repeat in 7 days if needed.

Prevention

• Mist palm daily to maintain humidity; mites hate moisture.
• Inspect weekly for early signs.
• Isolate new plants for 2 weeks.

Consistent humidity is the best long-term defense.